Question

Nomor 11 tolong dibantu pakai cara

Answer 1

Melalui titik (2,3) dan ( -1,4)
↓↓ ↓↓
(x1,y1). (x2,y2)

y - y1/ y2-y1 = x - x1/ x2-x1
y-3/4-3 = x-2/ -1-2
y-3/1 = x-2/ -3 → kali silang
-3(y-3) = 1(x-2)
-3y +9 = x - 2
-3y = x - 2 - 9
-3y = x - 11
y = (x - 11)/ -3
semoga dapat di pahami

Answer 2

Jawabannya A.
y-y1   = x - x1
y2-y1    x2-x1

y-3  = x-2
4-3     -1-2

y-3 = x-2
1       -3
-3y + 9 = x - 2
9 +2 = x+3y
11=x+3y